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6764.pdf (5.73 MB)
ETD Abstract Container
Abstract Header
CO2 Recovery by Scrubbing with Reclaimed Magnesium Hydroxide
Author Info
Green, Vicki C
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196688
Abstract Details
Year and Degree
, MS, University of Cincinnati, Engineering and Applied Science: Environmental Science.
Abstract
An innovative method of recovering carbon dioxide from flue gas has been studied whereby reclaimed magnesium hydroxide is used as the scrubbing agent. A slurry of magnesium hydroxide (Mg(OH)
2
) was used to separate carbon dioxide (CO
2
) from flue gas in an absorber. Thermodynamic equilibrium calculations indicate that by scrubbing flue gas already cleaned of its sulfur dioxide (SO
2
) concentration, 99% of the CO
2
will react to form more soluble magnesite (MgCO
3
) and hydromagnesite ((Mg
4
(CO
3
)
3
(OH)
2
) in the scrubber, and that CO
2
will be released when the resulting solution is heated. Turbine waste heat can be used to heat the CO
2
-laden slurry, creating a rich stream of CO
2
gas for further processing. The Mg(OH)
2
slurry can then be recycled for further CO
2
absorption. <P>This project established proof of concept of this model by studying the reaction characteristics of the absorption of CO
2
by solutions containing Mg(OH)
2
in a bench-scale bubble column operated under realistic conditions. An NDIR analyzer measured the CO
2
concentration in the exit gas. From this data, the steady state reaction characteristics have been determined using a simulated flue gas of 5%, 10%, and 20% CO
2
, Mg(OH)
2
slurry concentrations of 0.027, 0.068, and 0.14 moles per liter at temperatures of 25, 45, and 65
o
C. Both commercially available Mg(OH)
2
and reclaimed Mg(OH)
2
were used. Finally, the mass transfer coefficient K'
AG
was calculated for the system.
Committee
Timothy Keener, Ph.D. (Committee Chair)
Sumana Udom Keener, Ph.D. (Committee Member)
Soon Jai Khang, Ph.D. (Committee Member)
Pages
164 p.
Subject Headings
Environmental Science
Keywords
carbon dioxide removal
;
magnesium hydroxide
;
flue gas
;
sequestration
;
carbon dioxide absorption
;
global warming
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Green, V. C. (n.d.).
CO2 Recovery by Scrubbing with Reclaimed Magnesium Hydroxide
[Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196688
APA Style (7th edition)
Green, Vicki.
CO2 Recovery by Scrubbing with Reclaimed Magnesium Hydroxide.
University of Cincinnati, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196688.
MLA Style (8th edition)
Green, Vicki. "CO2 Recovery by Scrubbing with Reclaimed Magnesium Hydroxide." Master's thesis, University of Cincinnati. Accessed NOVEMBER 24, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196688
Chicago Manual of Style (17th edition)
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Document number:
ucin1378196688
Download Count:
409
Copyright Info
© , some rights reserved.
CO2 Recovery by Scrubbing with Reclaimed Magnesium Hydroxide by Vicki C Green is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Cincinnati and OhioLINK.